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Humulin N Insulin is a hormone injection used to control blood glucose sugar in dogs suffering from diabetes mellitus and hyperglycemia. Humulin N is a long-acting form of insulin that is slightly different from other forms of insulin that are not man-made.

Please note: 2nd Day Air charges of $24.99 are required for these temperature sensitive medication
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Item# Size/Desc Qty Price
U100 3ml Vial
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U100 10 ml Vial
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**Note: This product requires a veterinarian's prescription to purchase.At checkout you will need to provide your veterinarian's FAX or email address. We will then send him or her a prescription verification that he or she will need to sign and return before we can ship you this product.

*** Shipping Note: An item in this order requires special express shipping. An additional $24.99 shipping and handling fee will be added to the order to accomodate these special shipping needs. Please contact Vet ApprovedRx if you have any questions.

Active ingredients:

Humulin N is a crystalline suspension of human insulin with protamine and zinc providing an immediate-acting insulin with a slower onset of action and a longer duration of activity up to 24 hours

Dosage and Administration:

It is important to follow your veterinarian's prescription instructions for your pet.
Correct Syringe Type Doses of insulin are measured in units. U-100 insulin contains 100 units/mL 1 mL=1 cc.
With Humulin N, it is important to use a syringe that is marked for U-100 insulin preparations. Failure to use the proper syringe can lead to a mistake in dosage, causing serious problems for your pet, such as a blood glucose level that is too low or too high.
Syringe Use To help avoid contamination and possible infection, follow these instructions exactly.
Disposable syringes and needles should be used only once and then discarded by placing the used needle in a puncture-resistant disposable container.
Properly dispose of the punctureresistant container as directed by your Health Care Professional.
Preparing the Dose
1. Wash your hands.
2. Carefully rotate the bottle of insulin several times to completely mix the insulin.
3. Inspect the insulin. Humulin N suspension should look uniformly cloudy or milky. Do not use Humulin N if you notice anything unusual in its appearance.
4. If using a new Humulin N bottle, flip off the plastic protective cap, but do not remove the stopper. Wipe the top of the bottle with an alcohol swab.
5. If you are mixing insulins, refer to the &ldquoMixing Humulin N and Regular Human Insulin&rdquo section below. 3
6. Draw an amount of air into the syringe that is equal to the Humulin N dose. Put the needle through rubber top of the Humulin N bottle and inject the air into the bottle.
7. Turn the Humulin N bottle and syringe upside down. Hold the bottle and syringe firmly in one hand and shake gently.
8. Making sure the tip of the needle is in the Humulin N suspension, withdraw the correct dose of Humulin N into the syringe.
9. Before removing the needle from the Humulin N bottle, check the syringe for air bubbles. If bubbles are present, hold the syringe straight up and tap its side until the bubbles float to the top. Push the bubbles out with the plunger and then withdraw the correct dose.
10. Remove the needle from the bottle and lay the syringe down so that the needle does not touch anything.
11. If you do not need to mix your Humulin N with Regular human insulin, go to the &ldquoInjection Instructions&rdquo section below and follow the directions.

Do not use Humulin N:

if the insulin substance the white material remains at the bottom of the bottle after mixing or
if there are clumps in the insulin after mixing,
if solid white particles stick to the bottom or wall of the bottle, giving a frosted appearance.
If you see anything unusual in the appearance of Humulin N suspension in your bottle or notice your insulin requirements changing, talk to your veterinarian

Possible Side Effects:

-A skin reaction at the site of the injection
-Skin thickening or pitting at the site of the injection
-Low blood sugar levels hypoglycemia if too much is taken
-High blood sugar levels hyperglycemia if too little is taken


It is important to use the correct insulin syringe. 100 units/ml insulin U-100 requires a 100 unit syringe.

What to do if overdose?

Contact your nearest emergency animal hospital.


Not in-use unopened: Humulin N bottles not in-use should be stored in a refrigerator, but not in the freezer.
In-use opened: The Humulin N bottle you are currently using can be kept unrefrigerated as long as it is kept as cool as possible [below 86°F 30°C] away from heat and light. Do not use Humulin N after the expiration date stamped on the label or if it has been frozen.